Gravitheque 
This is still a work in progress; as such neither the library nor web application are particularly useful right now.
A collection of open source tools for brewers. It can be used as a web application, interactively through IRB or as a library to build your own brewing application. For use as a library refer to the full documentation. Submit bug reports and feature requests to the issue tracker.
Installation
gem install gravitheque
To use the Gravitheque library nothing more than a compatible Ruby 1.9 implementation is required. It may work on older and newer versions but only by coincidence; refer to the build logs to see which Rubies are supported.
Development
If you plan to send pull requests please work in a branch.
git clone git://github.com/johnmuhl/gravitheque.git
cd gravitheque
bin/test
Handy (non-essential) development dependencies can be installed with Bundler.
bundle install
# if you're on Linux or Windows
# bundle install --without mac
Now use Guard to run tests and update documentation automatically.
guard start --clear